Machine for turning cranked axles.



H. W. JACOBS; VHAGHINE FOR TURNING GRANKED AXLES. APPLICATION rum) MAY 25,-1907.

899.536 I v Patented Sept. 29, 1908.

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' I APPLICATION FILED MAY 25, 1907. 899,536.

Patented Sept. 29, 1908.

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I H. ,W. JACOBS. MACHINE POE TURNING GRANKED AXLES. APPLICATION FILED MAY 26, 1907. 899,536. Patented Sept. 29, 1908.

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JMM M HENRY WILLIAM JACOBS, OF'TOPEKA, KANSAS.

MACHINE FOR TURNING CRANKED AXLES.

Specification of Letters Patent.

Applicationfiled May 25, 1907. Serial No. 375,681.

Patented Sept. 29, 1908.

T0, alt whom it may concern:

Be 1t know that I, HENRY WILLIAM JA- coiss ofthecityofTopeka, in the county of Shawnee and in the State of Kansas, have invented a certain new and useful Improvement in Machines for Turning Cranked Axles, and do hereby declare that the following is a full, clear, and exact description thereof, reference being-had to the accompanying drawings, in whichelevation of a machine embodying my invention; Fig. 2 is an end view of Fig. 1; Fig. 3 is a longitudinal sectional view of the upper half of Fig. I; Fig. 4

Figure l is a side is a plan view of Fig. 1 Fig. 5 is a view on the l e 55 of Fig. 1; Fig. 6 is a View on the line 6-6 of Fig. 3; Fig. 7 is aviewon'the line 77 of Fig. lines h and $)-----9, respm-tively, ofl ig. I.

The object of my: invention has been to provide a machine fortnrning the crank pins of cranked axles which shall have, among others, the following advantages; that. of having an automatic cross-fccd'and an automatic radial feed, either or both of which maybe worked at a given time, as desired; that of enabling the same machine to turn crank pins on cranks of different radii; that of enabling the machine to be readily and. accurately clamped to the axles, and that of being portable and so compact that it can be applied. to the cranked axle of a locomotive without removing the axle from, the loctilliotivc, and to such ends my invention consists in a machine for turning the cranked axles hereinafter specified.

My machine is intended for turning cranked pins in any form of cranked axle.

but especially of cranked axles for locomotives, such as built-up axles witlf ellipticalor circular disks formed on or secured to the axles and having the crank pins mounted between the disks, or axles built up with a combinationof circular disks and a zig-zag bar as a center-piece known as the semi-"Z axle,

or one-piece crank axles, etc.

In that e'mbmliment of my invention which .lhave. chosen for illustration, an annular frame A is provided, which frame is made in two parts divided along its horizontal dian'ieter, the parts being screwed together by bolts B. Within this frame is rotativelv mounted a tool carrier (3 to be more fully described. In order to position the frame A and therefore the path of revolution of the tool, such frame is provided. with a 5; and Figs.;8 and t) are views on the 5 number of set screws which are adapted to be spread apart and to engage the cheeks of the crank,

In order that the crank pin may be turned 6( at exactly the desired radius from the axle center, the frame A is provided with set screws in line with each other and projecting from opposite sides of the frame, the said set screwsbeing adapted to bescrewed out from 6' the frame and forced into the counter sunk centers found in all built-up axles of this class, but which centers must be located on cranked axles of the one-piece ty a. In order that the same machine may e capable 7.1- of turning crank pinsat different radii from the said centers, the set screws D are mounted in pieces E having rectangular shanks which lit in a rectangularhole Fin the frame A; the pieces I) are provided with flanges c to fit against the faces of the frame, and the said pieces are-secured togetlu-u' in the frame by a screw G. The pieces E have threaded sockets c in which the said screws 1) may be seated, and as such sockets are formed nearer one end of the pieces E than the other end, i. 6., eccentrically to the rectangular shanks of the said pieces, the said pieecs'can be removed from the frame and reversed and put back in the socket F, thereby throwing the said screws 1) nearer to or farther from the center of the path of the tool, and permitting the tool to be used for two different radii of crank with a single set of pieces E.

A seriesof sharp pointed set screws II pro; ect from the sides of the frame A and canbe screwed out agamst the checks of the cranked .axle, the frame A is also provided with round headed setscrews I, ant this can be used to position the frame laterally between the checks of the cranked axle, while )ermitting the frame to be moved in its p anc, after which the sharp pointed set screws can be, screwed out-against the. said checks. it is also provided with pointed. set screws I radially mounted in lugs formed on the frame, which can be screwed against the heads of the drank arms or disks.

'llhc tool carrier is made in halves, connected by screws K and. dowel pins 1;. Oil-(ll half of the carrier there is nounted a tool having a compound feed; the said. feeds being alike, so that the description of one will be sullicient for both.

. There is a tool holder M mounted dially disposed guide, there being ribs 121 formed on the holder and engaging slots in in a ra- 1 mounted on the frame as to be radially adjustable and adapted to engage said starwheels.

In a machine for turning cranked axles, the eombinat ion of a frame, a tool carrier rotatably mounted in said frame, a tool holder radially mounted in said carrier, a star-wheel and screw for moving said holder, a tool slideaxially mounted on sald holder, a star-wheel and screw for rotating said slide, and a mounted on the frame as to be radial justable and adapted to engage said starvvheols, said pin being llattened upon one pin so v adside so as to be capable of being turned to pass said first mentioned wheel without .turnmg it.

t). In a machine for turning cranked axles, the eombmation ot a frame, a tool carr1erro-- said frame, said pins being on opposite sides of the frame, and each of said pms being eapable of engaging one. of said last mjent'ioned star-wheels.

10. In a machine for turning cranked axles, the combination of a frame, a tool carrier rotatablymounted in said frame, diametrically oppositev tool holders radially mounted in said earrier, a screw and star-\vluel for moving each of said holders. an axially movable slide mounted on each of said holders, a screw and st ar\\'-heel for moving each of said slides. the last mentioned star-\vlu'els being upon opposite sides of the frame. and radially movable adjustable pins mounted upon said frame. said pins being on opposite sides of the frame, and each of said pins being cz pable of engaging one of said last mentioned star-wheels, and being llattened on one side so as to eng: ge or not engage one of said first mentioned star-wheels, as desired.

In testimony that I claim the foregoing l have hereunto set: my hand.

IIFNRY \YlLLlAM J.\(()BS. Witnesses:

WM. J. limon'ri',

II. II. lawman. 

